GeForce 8600 GS (OEM) vs GeForce GTX 850M

Intro

Compare all of that to the GeForce GTX 850M, which features clock speeds of 876 MHz on the GPU, and 1000 MHz on the 2048 MB of DDR3 memory. It features 640 SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M		40 Watts
GeForce 8600 GS (OEM)		47 Watts
	Difference: 7 Watts (18%)

Memory Bandwidth

In theory, the GeForce GTX 850M should be 150% faster than the GeForce 8600 GS (OEM) overall, because of its higher data rate. (explain)

GeForce GTX 850M		32000 MB/sec
GeForce 8600 GS (OEM)		12800 MB/sec
	Difference: 19200 (150%)

Texel Rate

The GeForce GTX 850M will be a lot (approximately 306%) more effective at anisotropic filtering than the GeForce 8600 GS (OEM). (explain)

GeForce GTX 850M		35040 Mtexels/sec
GeForce 8600 GS (OEM)		8640 Mtexels/sec
	Difference: 26400 (306%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 850M is the winner, by far. (explain)

GeForce GTX 850M		14016 Mpixels/sec
GeForce 8600 GS (OEM)		4320 Mpixels/sec
	Difference: 9696 (224%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the largest amount of information (counted in megabytes per second) that can be transported across the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.